<template>
  <div class="singer" ref="singer">
    <list-view :data="singers" @select="selectSinger" ref="list"></list-view>
    <router-view></router-view>
  </div>
</template>

<script type="text/ecmascript-6">

  import ListView from 'base/listview/listview'
  import {getSingerList} from 'api/singer'
  import {ERR_OK} from 'api/config'
  import Singer from 'common/js/singer'
  import {mapMutations} from 'vuex'
  import {playlistMixin} from "common/js/mixins"

  const HOT_NAME = '热门'
  const HOT_SINGER_LEN = 10

  export default {
    mixins: [playlistMixin],
    data(){
      return {
        singers:[]
      }
    },
    created(){
      this._getSinger()
    },
    methods:{
      handlePlaylist(playList) {
        const bottom = playList.length > 0 ? '60px' : '0'
        this.$refs.singer.style.bottom = bottom
        this.$refs.list.refresh()
      },
      selectSinger(singer){
        this.$router.push({
          path: `/singer/${singer.id}`
        })
        this.setSinger(singer)
      },
      _getSinger(){
        getSingerList().then((res) => {
          if(res.code == ERR_OK){
            this.singers = this._normalizeSinger(res.data.list);
          }
        })
      },
      _normalizeSinger(list){
        let map = {
          hot:{
            title:HOT_NAME,
            items:[]
          }
        }
        list.forEach((item,index) => {
          if(index < HOT_SINGER_LEN){
            map.hot.items.push(new Singer({
              id: item.Fsinger_mid,
              name: item.Fsinger_name
            }));
          }
          var key = item.Findex
          if(!map[key]){
            map[key] = {
              title:key,
              items:[]
            }
          }
          map[key].items.push(new Singer({
            id: item.Fsinger_mid,
            name: item.Fsinger_name
          }))
        })
        //将列表序列化
        let ret = []
        let hot = []
        for(let i in map){
          let val = map[i]
          if(val.title.match(/[a-zA-Z]/)){
            ret.push(val)
          }else if(val.title === HOT_NAME){
            hot.push(val)
          }
        }
        ret.sort((a,b) => {
          return a.title.charCodeAt(0) - b.title.charCodeAt(0)
        })
        return hot.concat(ret);
      },
      ...mapMutations({
        setSinger: 'SET_SINGER'
      })
    },
    components:{
      ListView
    }
  }
</script>

<style scoped lang="stylus" rel="stylesheet/stylus">
  .singer
    position: fixed
    top: 88px
    bottom: 0
    width: 100%
</style>
